Just got a call from my LBS saying that my 9070 is avaiable for pickup tomorrow. To bad the frame I'm putting it on is arriving in 10 weeks...

I'm happy for you that your group is available. Too bad you don't have your frame to put it on. I'm in the opposite position. My new Specialized S-Works SL4 frame has been sitting in the storeroom at my LBS, for a month, waiting for the DI2 group to arrive. Rumors are flying. A couple of weeks ago, the local Shimano rep said by mid-February. Now I'm hearing, in forums and other locations, it might be mid-March. I keep hoping for the best.

Latest I've seen is that it is officially approved for 7900, 6700, 980, 780, I think some others. Possibly 105 and SLX... This is derailleurs only. on brakes, without concessions for the very slick coating, the cable can pull through the pinch bolt assembly. Kind of like Powercordz. May-ish for shift and brake cables.

You could use 11sp spacers instead of the 10sp ones. Of course the top 5 cogs would work a bit worse than perfect. Some machining would be neccessary on their carriers as well to get the best result, but I'd defenetely try it with a CS-6700, where it is only 3 cogs that are groupped together. Too bad for the extra weight.

speaking of the cables, i found that the outer coating of my shifter cable seems to fray easily. i had mine disassembled a maximum of three times and you can see the coating fray. not the individual cables but only the coating. doesn't affect performance but it doesnt look neat.

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